Magazine heating-stove.



J. W. NOXDN.

MAGAZINE HEATING STOVE.

(Applicafion filed May 29, 1901.)

No. 693,735. Patented Feb. I8, I902.

(No Model.)

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llnrrnn STATES Aritnr JONATHAN VARNER NOXON, OF VALLEY CITY, NORTH DAKOTA.

MAGAZINE HEATING-STEVE.

SPECIFICATION forming part of Letters Patent No. 693,735, dated February 18, 1902.

Application filed May 29, 1901. Serial No. 62,363. (No model.)

To (LZZ whom it may concern:

Be it known that I, JONATHAN WARNER NOXON, a citizen of the United States, and a resident of Valley Oity,in the county of Barnes and State of North Dakota, have invented a new and Improved Magazine Heating-Stove, of which the following is a full, clear, and exact description.

The object of this invention is to provide novel details of construction for a heatingstove of the self-feeding type which permit an exact control of fuel combustion, adapt the stove for complete burning of valuable Waste gaseous products, and utilize the combustion of fuel for heat generation in a degree greatly in. excess of results afforded by ordinary heating-stoves, whereby a very economical and effective heat generation is afforded.

The invention consists in the novel construction and combination of parts, as ishereinafter described, and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side view of the invention applied upon the body ofa heatingstove. Fig. 2 is a transverse sectional view substantially on the line 2 2 in Fig. 1, and Fig. 3 is a transverse sectional view substantially on the line 3 3 in Fig. 1.

In the drawings, 4 represents the shell or body of a heating-stove that at its lower end is joined upon the flaring body of a cylinder or fire-pot 4, wherein a grate 4. is held at the lower end, and said lower portion of the firepot a is to have seated engagement with any preferred form of ash-pit and has theusual legs for support of the stove, and as the ashpit and legs are not features of the invention they are omitted from the drawings.

An annular cap-plate 5 is secured at the upper edge of the body 4, and in a central opening therein the coniform or downwardly-converged wall 6 of the hot-air chamber 7 is held suspended by a seated engagement of the radial flange 6 on the air-chamber wall with the upper side of the cap-plate, said flange and cap-plate being held together by screws a. Upon the flange 6 is seated and secured the flanged lower edge of a hood 6, that is preferably rendered coniform in its wall and is in effect the upper portion of the hot-air chamber 7, and, if preferred, the hood 6 and coniform wall 6 may be formed in one piece.

An inlet passage 8 in pipe form is outwardly extended from the hood 6 and at its outer end connects with an air-duct 8, that depends from the inlet-pipe toward the lower part of the stove for the reception of air, and at the upper end or any other convenientpoint a suitable air-controlling damper or valve 9 is introduced in the air-inlet pipe or duct. From thecap-plate 5 at a proper distance from the inlet-pipe 8 a draft-pipe 5 is extended to any desired point for the transfer of the waste gases to a chimney or the like.

Centrally in the hood 6 a circular aperture is formed, which is threaded in its wall, as shown at I), this thread being of coarse pitch, as indicated in Fig. 1. An annular headpiece 10 is provided with an exterior thread I), which is adapted to have screwed engagement within the thread I), and a suitable length is afforded the headpiece 10, so that it may receive proper longitudinal adjustment in the hood 6.

A cover-plate 11, having a beveled peripheral edge, is adapted to seat upon a corresponding edge of the opening in the annular headpiece 10 and form a gas-tight joint therewith. At proper distances of separation a plurality of transverse grooves are formed in the upper edge of the headpiece 10, and corresponding ribbed projections c are formed on the lower side of the cover-plate 11, exterior of the beveled face thereon, which ribs engage within the grooves, as shown in Fig. 1. Upon the cover-plate 11 handholds or projections d are formed or secured and aflord means for manually turning the cover-plate and the headpiece 10, which is locked thereto by the rib and grooved connection described.

A preferably cylindrical fuel-magazine 12 of suitable dimensions is secured by screws or the like at its upper end in the annular headpiece l0, and, as shown in Fig. 3, said magazine is held centrally in the headpiece by spaced ribs 6, which project from the headpiece and provide air or gas passages between said ribs. One or more lateral openings g,

formed in the wall of the magazine 12, provide passages between the upper portion of of the radial flange i.

the magazine and a corresponding part of the hot-air chamber 7, said passages intersecting the spaces 6, formed between the ribs 6, as shown in Fig. 3.

In the lower portion of the hot-air chamber 7 an annular flange h is formed on the inner side of the wall 6 thereof,and said flange is cut away on the edge at proper intervals, leaving projecting ears h thereon, the spaces 72. between said ears affording passages for gas or air. The cars 71. are designed to have loose contact with the wall of the magazine 12 and serve to maintain it spaced concentrically within the air-chamber 7, as clearly shown in Fig. 2. The openings 71 formed between the ears h by the reduction of the flange h, afford passages for draft from the hot-air chamber7 to the fuel at the lower end of the magazine 12, such currents passing normally downward and around the lower edge of the magazine and through the fuel in the fire-pot.

Above the annular flange h a radial flange i is formed or secured upon the exterior of the magazine 12, and the opposed surfaces of the flanges h and i are parallel with each other, so that contact of said surfaces effected by a depression of the magazine will practically close the openings 71. as will be further described.

The lower end portion 12 of the magazine 12 and the like portions 6 of the hot-air-chamber wall 6 are preferably made removable, as shown in Fig. 1, these removable ends being lapped upon and secured to the main portions of the parts mentioned by screwsfor the like, this-provision afiording convenient means for renewing the lower ends of the magazine and hot-air-chamber wall if they, by proximity to the fire in the lower part of the combustionchamber or fire-pit 4, become burned out or split by exposure to the fire.

In operation it is preferred to introduce ashes or the like within the empty fire-pot 4 to within about six inches from the lower end of the wall 6. Then soft coal-such, for example, as lignite coalis introduced through the open top of the fuel-magazine 12 until it reaches the lower edge of the'hot-air-chamber wall 6. The cover-plate 11, which had been removed to admit fuel, is now replaced and rotated in a proper-direction to screw the annular headpiece 10 down sufficiently to nearly close the air-draft passages k by depression Suitable .kindlings are placed upon the coal in the fire-pot, and these are ignited through the top of the magazine 12, which is opened by the removal of the cover-plate 11, and said cover-plate may with advantage be left partly unseated to admit air. As soon as the coal in the fire-pot has been fully ignited the magazine 12 should be filled with coal and the cover-plate properly seated, so as to close the top of the magazine in a gas-tight manner. The headpiece 10, together with the attached magazine 12, is now elevated a proper distance by the rotation of the cover-plate 11, and the damper or mulate due to combustion of the fuel.

valve 9 is adjusted for admission of a proper amount of air to the fire, which is obviously drawn up the air-duct 8, thence through the inlet-pipe 8, and down through the hot-air chamber 7 to the fire in the fire-pot, as indi cated by arrows in Fig. 1. There is no need for an introduction of air from the ash-pit below the grate at", as by practical experiment this is found unnecessary. Aside from being a support for the mass of coal held in the firepot and magazine the remaining function for the grate is to afford means for the periodic removal of a portion of the ashes which accu- It will be seen that the air passes into the top of the chamber 7 and by its contact with the hot magazine 12 and-the wall of the chamber 6 as it passes downwardly the volume of air is rarefied and does not chill the fire to which it supplies the oxygen necessary for the free combustion of the coal. The perforations g, affording passages from the upper portion of the magazine 12 into the surrounding hot-air chamber 7, serve to permit carbonaceous gas formed by coking and combustion of coal held in the magazine 12 to pass from the magazine and mingle with air that is inducted into the hot-air chamber, and thence goes to the fire in. the fire-pot that consumes such valuable products as are ordinarily wasted. By the depression of the magazine 12, as previously explained, the air-draft between the flanges h and 11 may be cut off, and if it is desired to keep the fire burning very slowly such an adjustment may be made which will limit the entrance of air to the amount which may pass through the perforations g into the upper end of the magazine 12, and thence down through the fuel therein to the fire, and as the consumption of air in the fire-pot and hollow body of the stove eventually produces a partial vacuum it will be evident that a downward draft of air will be established through the magazine 12, which will carry with it the gase ous exhalations thrown off from the burning and heated fuel that will be consumed at the lower end of the magazine.

The perfect combustion of fuel in the improved stove and the simple means for the regulation of said combustion, so as to afford necessary heat as required without waste of fuel, are features ofmarked advantage secured by the use of the improved heatingstove.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent-- 7 1. A heating-stove, comprising a hollow body, a fire-pot attached to the lower end of the hollow body, a downwardly-converging hot-air chamber hung in an opening in the top wall of the hollow body,an air-induction pipe opening into the upper portion of the hot-air chamber, a valve in said pipe, a fuelmagazine having a headpiece thereon adapted to screw through a threaded opening in the top of the hot-air chamber, a cover-plate on the magazine, adapted to interlock with the headpiece of the magazine for its rotatable movement, and an air-controlling device formed partly on the magazine and partly on the air-chamber wall, adapted to be graduated in opening or be closed by rotation of the magazine.

2. In a heating-stove of the character de-- scribed, the combination with the supported air-chamber, and the air-supply therefor, of the vertically-adjustable magazine, and the air-controlling device between the magazine and air-chamber, said device being regulated by adjustment of the magazine in the top of the air-chamber.

3. In a heating-stove of the character described, the combination with the pendently supported,coniform air-chamber in the stovebody, the air-supply pipe therefor, the valve in said pipe, and the draft-pipe on the stovebody, of the magazine held pendent in the air-chamber, the screw-threaded headpiece secured on the top of the magazine and engaging a threaded opening in the top of the air-chamber, the air passage between the headpiece and wall of the magazine, the removable cover for the magazine, means for locking said cover upon the headpiece of the magazine, handholds on the cover for its rotatable movement, and the air-controlling device partly on the air-chamber wall and partly on the magazine, said device being controlled by vertical adjustment of the magazine.

4. In a heating-stove of the character described,tl1e combination with the hollow body, and a hot-air chamber pendent therein, of a fuel-magazine having a coarse-threaded engagement with the apertured top of the hotair chamber, a removably-secured cap on the fuel-magazine which is adapted for manipulation whereby to raise or lower the magazine, and an air-controller device controlled by adjustment of the magazine.

5. In a heating-stove of the character de scribed, the combination with the supported hot-air chamber and the vertically-adjustable fuel-magazine therein, of the air-controlling device, comprising an annular flange on the inner surface of the hot-air chamber, having an air-passage formed by reduction of a portion of its free edge, and a radial flange projected from the fuel magazine above the annular flange, said radial flange being controlled in adjustment toward or from the annular flange by vertical movement of the fuel-magazine.

6. In a heating-stove of the character de* scribed, the combination with the supported hot-air chamber, the screw-cut annular headpiece engaging a threaded opening in the top of said air-chamber, and a magazine hung from the headpiece, of a cover-plate jointed upon the upper end of the annular headpiece, ribs on the cover plate engaging within grooves in the edge of the headpiece, and handholds projected from the cover-plate.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JONATHAN WARNER NOXON.

Witnesses:

WV. W. SMITH, I. J. Mon. 

